Heater.



' Patented Oct. 3|, I899. G. F. ANDERSON.

HEATER.

(Application filed Jan. 20, 1899.)

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No. 635,735; Patented Oct. 3|, I899.

A G. F. ANDERSON.

HEATER.

(Application filed Jan. 20, 1899.)

(No Model.) 2 Sheets8heet 2.

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NITED STATES PATENT Futon.

GEORGE FRANK ANDERSON, 0F MARsHALLTowN, IOWA.

H EATER.

SPECIFICATION forming part of Letters Patent No. 635,735, dated October 31, 1899. Application filed January 20, 1899. Serial No; 702,791. (No model.)

To ctZZ whom it may concern.-

Be it known that I, GEORGE FRANK AN- DERSON, a citizen of the United States, residing at Marshalltown, in the county of Marshall and State of Iowa, have invented certain new and useful Improvements in Heaters; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to certain improvements in heating-drums or heaters, and is de signed, primarily, as an improvement upon the construction shown in the Patent No. 564,464, granted to me July 21, 1896. The novelty resides in the peculiarities of construction and the combination, arrangement, and adaptation of parts, all as more fully hereinafter described, shown in the drawings, and then particularly pointed out in the appended claims.

I dispense with the partition which is present in the old construction and employ in its stead an oval inner wall, which extends to the outer wall, and thereby gives increased heating-surface without increasing the outside diameter of the heater and allowing a variation of space between the walls for the different kinds of fuel. It also provides a heater that is entirely exposed to outside radiation, every particle of the metal being outside surface. The top piece may be made of open-work where the radiation from the inner wall passes through.

The invention is capable of embodiment in various forms, all of which I consider as within the scope thereof.' Some of the most important thereof are illustrated in the accompanying drawings, which, with the letters of reference marked thereon, form a part of this specification, and in which Figure l is a view in perspective with portions broken away, showing the interior construction of my improved heater. Fig. 2 is a sectional View of a modified form. Fig. 3 is a horizontal section through the body of the heater. Fig. 4 is a top plan with the top plate removed. Fig. 5 is a View of a modified form Fig. 6 is a perspective view of the lower end piece for the inner wall. Fig. 7 is a perspective view of the inner wall removed.

Like letters of reference indicate like parts throughout the several views.

Referring now to the details of the drawings by letter, A designates the outer shell, which may be of any desired shape, preferably substantially cylindrical, and held between the end pieces or castings B B in any suitable manner. I have hereinshown the end pieces or castings as provided with flanges b, as in my patent above referred to; but it is evident that they may be held to the shell or outer wall by other meansas, for instance, by rods passed vertically through the space between the inner wall, where they will not be in the smoke-chamber; but as this is a Well-known way of securing the ends and shell of a stove of this character it has not been thought necessary to illustrate the same.

Within the outer wall or shell is an inner wall or shell, which in this instance enables me to dispense with the partition of my patent, and this inner wall or shell is made substantially oval in form, as illustrated, with its opposite points touching the inner surface of the outer wall, as shown. This inner wall does not extend entirely to the bottom of the outer shell, but terminates at a distance therefrom, as illustrated, so as to provide a space beneath the bottom thereof for the passage of the products of combustion, as indicated by the arrows. This inner shell G has the extension D, which may or may not be circular, as shown, and this extension is received in the central opening E of the lower end piece F, around which opening is the collar or flange e, as indicated, while around the outer ends of this lower end piece F is another collar or flange f, into which is received the lower end of the inner shell or wall. It will thus be seen that I provide a space upon opposite sides of the inner shell, one for the inlet and the other for the outlet of the smoke and products of combustion, as indicated. The top wall of the inner shell may be open-work, as indicated at G.

The heater thus described may be provided with a door, as seen at H, for fuel or a cleanout when used as a drum-heater; but it will be evident that it may be used as an air-tight heater by inserting fuel through this door.

A heater thus constructed may be used in various ways. As shown in Fig. 1, it is provided at the top with two collars or flanges I and I, over which may be fitted pipes J and J, which communicate with a pipe K, leading from a stove, with a damper in the said pipe K, between the pipes J and J, as shown, and the pipe J, communicating with the outlet-pipe J The arrows indicate the course taken by the smoke and products of combustion from the stove. 1

In Fig, 2 the heater is shown as provided with an inlet on the side, as at L, and the outlet at the top. This order may be reversed and the inlet be at the top and the outlet at the side, if preferred, without in the least affecting the merits of the invention.

In Fig. 5 I have illustrated the use of the heater in a room above that in which the stove is located. Its operation is the same, however. In this use of the device the stovepipe passes through the space inclosed by the inner oval shell.

As seen in Fig. 4, the inner shell may have a connecting-pipe, as at M, provided with a damper N for cutting off communication between the two smoke-chambers or so that by turning the damper a straight or direct draft may be provided when necessary or desirable.

In all the forms the extension of the inner shell is open at the lower end, as shown, thus providing means for the ingress of the cold air from near the floor.

7 When used as shown in Fig. 1, the connection between the top of the heater and the pipe K should be by an extension T coupling or connection, so that the same may be adjusted vertically, so that a heater may be of uniform height and yet made to serve with diiferent heights of stoves.

The radiatingsurface of the inner Wall may also be used for heating water by employing the Vertical air-chamber in either of the forms. For instance, as seen in Fig. 5, the smoke would pass through the water-space and entirely surround it. In connection with a furnace it would make a very eifective hotwater supply for radiation or hot-water heatmg.

Having thus described my invention, What I desire to claim and secure by Letters Patent is- 1. A heater consisting of a casing with an inner shell forminga vertical air-passage therethrough, said inner shell being shaped with the outer casing and having an extension at the lower end with its end open, and an in-' dependent end piece having flange to receive the lower end of the inner shell, and a ecu tral depending collar as and for the purpose specified.

2. A heater consisting of an outer shell an inner shell forming an air-passage therethrough and of substantially oval shape, and an extension depending from the bottom of the inner shell and open at its lower end and of different shape from that of the inner shell to provide space beneath the lower end of the inner shell, and an end piece having an oval-shaped flange to receive the lower end of the inner shell, and a depending centrallydisposed collar substantially as and for the purposes specified.

3. A heater consisting of an outer shell, an inner shell of substantially oval shape, an end piece having, an oval-shaped upwardlyextending flange to receive the lower end of the inner shell, and a depending collar, an

air-inlet pipe held in said dependingcollar,

and a damper for controlling the passage of air through the air-pi pe substantially as specified.

In testimony whereof I aftix my signature in presence of two witnesses.

GEORGE FRANK ANDERSON. Vitnesses:

J. L. HOLE, GEO. J. ALLEN.

its opposite portions extending to the wall of 

